Cowling fastener



is ssanitari;viewing. sicrnbleii .sh thaparts secured `together in@v x i u @Fi Y uoiytheretaining :C Secudftcltarenaria/and g, 5 is affront. elevationalnview of thescrew ,y l 4 `is any elevationalyview *2y-,my nevelanchorine arrangement consistina Cowling support. Thefcowling is preferably coni- `cally countersunkto receive the conicalfface I8 of the screwvh'ead,v andris provided with'a reinforcing,,wear-resisting `groxninet 20 correspondingly countersunk toA Acomplement the counterfsunlrvportion '22 of the cowling. The grommet projects through and is folded overand crimped to the conical portion ofthe cowling; shown atA 24.

` rThe `grommet is further ksecured'to thecowling by crimping" the same, by providing transverse fcrimps or'ridges 26 projecting'on the outwardly presenting face thereof. f The projections Acooper- 'ate with :the-notches 21er 28 formed in theabuttingco'nicaltface of the; screw head lto prevent rotationl thereof due toy vibration when the cowl- -i'ng and; support are rmly secured together.A The cowling support is likewise countersunk, 29,` to receive the countersunkportion of the cowling;` `a`ndhas permanently secured thereto on'its inwardly presenting face in concentric relation with thek opening, the retaining spring i6 bymeans of arivet.A The spring is preferably formed, for a portion of its length, of conical shape at the l 'linnen end thereof, and iscylindrical for the remainder of its length, the vconical portion being suiliciently largeto encompass the conical countersunk portion 29 ofthe Cowling; support The I f Spring, as thus provided, is laterally and longitu- `idinally yieldab1etherebyv providing, in coopera- ,n .,tljmt coWLlNG-FAstrENEn w y ISeattIe,` AWashl ject ffrrh fiscales enievin'prilcorrectriceo..cttw)HL tionw-itlifan opening of slightly larger diameter thanthe screw, means for alignmentof thesprlng and "screw: .when'i1the device lis Lused'' for securing v, parts, together whichcan not beishifted relativev toeach other to eec'tfa registry'of theapertures'."

yThe screw: has fa; "shank portion formed vwith a specialthread 32fthat` is preferably square shaped to cause the collapsing of the retaining spring by f force components 'acting in thedirection of-the.

Thelongitudinal. yieldability ofA the conical por-'1l axis of the screwl thereby eliminatingany tendl` ency to expand the-spring and reducing to a-'mini-` 1 ly ingvwcoil. 4In order toy permanently retain #the f mum; the. :force required'y to compress ythe J retainscrew in' place in the cowling,'lthe screw is formed f with a groove 34, to receive a split retairiingrlng 36; Thistscrewfisr-also formed with a .groove 3B' Y -adjacenttoitsfhead toreceive a* packing in'.th`e= rformatta leather .washer 40,which serves to pro' ingfsufpportf l0 cowlingftlffsecured together vide; -When ithe ,screw is seated, an; eective seal against leakage; 4wherrused yasal fastener in a 'liquid-proof:compartmnt,. such as-in floatsor A ,yingboatsr The? screw head is provided with a conicaiabutting face I8 and a flat top surface 42 having thereon a transverse slot M to receive` a suitable tool. The depth of the slot issuch that it provides, with the conical abutting face f of the'head, notches 21 for: engagement vwiththe projections or `ridges 26 to retain the screw against rotationv due to vibration when the mem-` bersare nrmiy connected together. The screw head is provided with further notches 28v which provide for greater renement of adjustment of The language and expressions which have been employed throughout the specification are used as terms of description only and not ofvlimita-` tion, andgsaid termsare intended to include all the equivalents and such modifications as are possible tobe vemployed within the scope of the appended claims.`

Whatis claimed is: y 1. In combination, a pair of members to be connected, provided with openings to register constructed andsarranged as to piQvidea yieid- Cil respect to its supporting member, when the mem'- bers are rmly connected together. y

2. In combination, a pair or rriembers, to `be connected, provided with openings to register with one another, one of said members having a helical spring lxediy secured in `concentric relation with the opening on the inwardly pre-A having one or more ridges adjacent the opening on the outwardly. presenting face thereof and a screwfmember 'rotatably mounted in said opening, said screwand said hlical'spling being S0 ingly threaded connection for said members, said Ascrew having a head portion providedwith one 'orf-more notcheson the abutting .fete vof saidl headsportion adapted for complemented Yengagea ment vwith said .ridgesfor iixediy securing said screw-against Arotation with respect t0 its sur# 1 porting memberpwhen the" members are nrmly connected; together, i

y3. InV combination, a pair of members to be connected, provided `with"onetimes. to register with'-, oneanother, one of lsaid members having a helical `slrii'ig xedly secured in concentric relation with Ythe opening. on the inwardly presenting! face thereof, theothel ci said membershav ing a reinforcing grommet of wearresisting ma` terial fixedly secured in the opening thereof 'and having one ormore ridges on the outwardly presenting face of said grommet and a screwimem ber rotatably mounted insaid "Qpenil'igr said screw member and said helical Ispring being eol constructed and arranged as to'. provide a yieldingly threaded connection Vfor said members, said screw having a1 head portion provided with one or more notchet` on the abutting face of said head portion adapted for complemental engagement with said ridges for iixedly` securing said screw against rotation with respect to itssupporting member, when the members are rmly connected together.

4. A screw element adapted for anchorage with` a coiled wire to connectapair of members, said screw element having a lthreaded shankportion and an abutting head portion, said head portion having, on the abutting face thereof one or more notches adapted for complementa] engagement withone or more ridges on the member tobe' connected adjacent said head for xedly securing said screw against relative rotation therewith when said anchorage 4is accomplished.

5. A screw element adapted for anchoragewith a coiledwire to connect a pair of members, said screw element having a square threaded shank i portion and a head portion, said head portion having one or more notches adapted forcemplemental engagement with one or more ridges 0n the member adjacent said head for fixedly` securing said screw i against `relative rotation therewith. whensaid anchorage is accomplished.

6; A screweiexnent to connect apair or members. having a square threaded shank` portion adapted for threaded engagement withV a fyieldf able anchoring element and a head portion proi vided with a locking connection integrally formed thereon and adapted for complementa! (engage- .ment with one o! the members to be connected to prevent relative rotation therewith anchorage is accomplished.

7. Y A fastening device for securing together two members comprising, in combination.' -a coiled wire adapted to be supported by one of said membersy and yieldable lateraily'- and longitudinally with respect thereto and a screw element having a square threaded shank` portion and a head portion, said head portion having one or more" notches adapted for complemental engagement with a ridge or ridges on the other of said vmembers to-be'connected, for fixedly securing said screw against Arelative rotation therewith when said anchorage is accomplished.

` Y DANIEL Bosni.

when anniv 

